Weber County · about 9,100

Washington Terrace

Detached not in local code yet

Washington Terrace currently describes internal accessory dwellings and does not allow external ADUs. Lots of 6,000 sf or smaller are called out as too small. Senate Bill 284 requires a detached path on 11,000 sf lots beginning October 1, 2026.

Internal ADU

Permitted under state law, with additional local limits on small lots.

Detached ADU

Not currently allowed as an external unit. From October 1, 2026, lots of 11,000 sf or larger with a house must be able to take a detached ADU as a permitted use. Confirm the implementing ordinance with planning.

Lot

No ADU on lots of 6,000 sf or smaller, per local information. Detached (from Oct 1, 2026): 11,000 sf or larger.

Size

Internal: no state size cap. A future detached unit cannot exceed the primary dwelling.

Parking

Per code.

Owner occupancy

Owner occupancy is required.

Rental

Thirty days or more.

Design

Lots here are often compact. A detached building is a question of remaining yard, not only of the ordinance.